John bowles



J. BOWLES.

(No Model.)

SAW.

Patented Jan. 27,1891.

"HIM WW I m WWII JOllN BO\\'LES, OF \VASIIINGTON, DISTRIC" OF COLUMBIA.

SAW.

SPECIFICATION forming part of Letters Patent No. 445,239, dated January 27, 1891.

Application filed December 19, 1889. Serial No. 334,277. (No model.)

To all whom it 72mg concern:

Be it known that I, JOHN BOWLES, a citizen of the lfnited States, of Vashington, in the District of Columbia, have invented certain new and useful Improvements in Saws; and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make anti use the same.

My invention relates to improvements in saws; and it has for its object to provide means for planing and polishing the surface of the work as it is operated upon or cut by the saw.

\Vith these ends in view, my invention consists of a saw-tooth having a planing'surface and a polishing-surface on one of the lateral faces thereof, the polishing-surface being arranged interiorly of the planing-surface and inclined outwardly from the plane of the sawblade and extending backwardly from the planing-surface to the base of the saw-tooth, or substantially so.

-'lo enable others to understand my invention, I will now proceed to a detailed descrip tion thereof, in connection with the accompanying drawings, in which Figure 1 is a side elevation of a circular saw, and Fig. 2 is an edge view of the same. Fig. 3 is a perspective view showing a series of saw-teeth embodying my invention. Fig. at is an edge view of a circular saw, showing the alternate teeth upset in the ordinary manner and constructed in accordance with my invention. Fig. 5 shows a front elevation of a tooth having both the planing and polishingsurfaces. Fig. 6 is an elevation, on a magnified scale, of the tooth shown in Fig. 5, which tooth is provided with theplaning and polishing surfaces.

Like numerals and letters of reference denote corresponding parts in all the figures of the drawings, referring to which 1 designates the saw blade or plate, of the ordinary form, and 2 3 the series of teeth thereon. Each tooth of the series of sawteeth is provided with a planing-surface and with a compressing and polishing surface on one of the lateral faces of the same and at one side of the cutting-edge or apex 5 of said tooth, the cutting-edge of the tooth being slightly beveledor inclined from its workingsurface 4 toward its neutral surface 6. The planing-surface of the tooth is arranged or formed to project or bulge laterally beyond the plane of the saw-blade or ontof line there with, and the said planing-sm'face may also be located or arranged at one side of a line drawn through the saw-blade and the cuttingedge of the tooth, which cutting-edge is in the plane of the saw-blade. The compress ing and polishing surface a is arranged laterally of or below the planing-surface 4 on the lateral face of the saw-tooth, and said compressing and polishing surface is made to project slightly beyond the planing-surface in, order to smooth and polish the work after it has been planed. 'lhe smoothing and polishing surface is inclined outwardly from the sawblade and backwardl y from the plan ing-surfacc, and said smoothing and polishing surface a maybe made substantially continnous with the planing-surface.

The teeth of the saw are preferably set in a manner similar to the ordinary saws, with, of course, this exception, that said teeth are formed wit-h the integral planing-surfaces. The common method of setting saw-teeth is to force every alternate tooth bodily in one direction and at a given angle to the sawblade and the remaining teeth at a corresponding angle but in the opposite direction, whereby the saw is given the necessary clearance in order to properly relieve the cut of the saw-dust and to freely work therein.

In the drawings I have indicated the mair nor of setting the teeth 2 3 of my improved 'saw, in which every alternate tooth 2 is set at an angle on the right-hand side of the sawblade and the remaining teeth are set at corresponding angle but on the opposite or left-hand side of the saw-blade, as is obvious.

In practice I prefer to form the planingsurface and the smoothing and polishing surface on the tooth by the means or die employed to force or set the tooth at an angle to the saw-blade, whereby the planing-surface and the smoothing and polishing surface on the tooth is formed by swaging the metal thereof, and said surfaces are formed on the tooth at the same time that the latter is set at an angle to the saw-blade; but, of course, I do not confine myself to this method of line with the blade of the saw.

as applied to or'used inbonnection with a cir:

making the saw-teeth on the blade; nor do I wish to confine myself to grinding or bu rnishiug the blade and the teetli thereof to form the planing-surface and the smoothing and polishing surface, nor to any method or means for forming such surfaces on the teeth.

The operation of my invention is simple and ireadily apparent. As the saw-teeth cut through or sever the fibers of the wood, the laterally-extending or projecting planing-surfaces and the compressing and polishing surfaces on said teeth impinge against the rough surface of the work and operate to smooth or plane the same and to compress and polish the surface of thework. The work is thus cut, planed, and compressed and polished at one and the same operation, which effects a material saving in the amount of time and labor required to finish the lumber for the market, and reduces to a minimum the cost of putting the lumber in condition for use.

I would also have it understood that I do not confine myself to any particular configuration, angle, or shape which may be given to the tooth,in order to form the planing-surface and the compressing and polishing surface thereon, nor to the location of said surfaces at any particular point on the tooth, as I am aware that modifications may be made therein without departing from the spirit of this invention, the esseptial feature of which isasaw-footh provided with a planing surface and with a compressing and polishing surface arranged interiorly of the planing-surface on one of the lateral faces of said saw-tooth.

I Although I have shown my improvement cular saw, yet I would have it understood that I do not restrict my invention to this particular kind of saws, as it can be advantageously used on reciprocatingandotherclassesof saws.

It should be understood that the planingsurface and the compressing and polishing surface can be combined with teeth, the sides of which, except the planing-surface, are in Having thus fully described my invention, what I cla'nn as new, and desire to secure by Letters Patent, .is-

1. A saw-tooth made integral with the sawblade and having its inner end or base forced laterally of the blade orswaged, substantially as shown and described, and provided with a polishing-surface on one of its lateral faces, the swaged portion of the tooth and the planing-surface being situated at one side of the plane of the saw-blade or out of line therewith, substantially as and for the purpose described. 2. A saw-tooth having a planing and a polishing surface on one of the lateral faces thereof, the portion of the tooth below the planingsurface projecting slightly beyond the same to provide the smoothing and polishing surface, for the purpose described.

3. A saw-tooth having on one of its lateral faces a planing-surface and a smoothing and polishing surface, said smoothing and polishing surface being arranged interiorly of the planing-surface and inclined outwardly from plane of the saw-blade and extending backwardly from the planing-surface to the base of the tooth, substantially as described, for the purpose set forth.

4. A saw-tooth having on one of its lateral faces the inclined planing and polishing surfaces which extend frpm a point near the cutting-edge of the tooth to the base thereof, the polishing-surface being arranged interiorly of the planing-surface and substantially continuous with the same, substantially as and for the purpose described. I

5. A saw-tooth'having on one of its lateral "faces a planing-surface and a. compressing and polishing surface arranged interiorly of said planing-surface, substantially as described, for the purpose set forth. In testimony whereof I affix my signature in presence of two witnesses.

' JOHN BOWLES. "Witnesses:

W. O. BELT, II. I. BERNHARD. 

